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Commit d26592a9 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Use dev_data->domain in get_domain() 



Using the cached value is much more efficient than calling
into the IOMMU core code.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 80187fd3

drivers/iommu/amd_iommu.c

+1 −6
Original line number Diff line number Diff line
@@ -2215,16 +2215,11 @@ static void queue_add(struct dma_ops_domain *dma_dom, 
static struct protection_domain *get_domain(struct device *dev)

{

	struct protection_domain *domain;

	struct iommu_domain *io_domain;



	if (!check_device(dev))

		return ERR_PTR(-EINVAL);



	io_domain = iommu_get_domain_for_dev(dev);

	if (!io_domain)

		return NULL;



	domain = to_pdomain(io_domain);

	domain = get_dev_data(dev)->domain;

	if (!dma_ops_domain(domain))

		return ERR_PTR(-EBUSY);